The review of geochronological and historical data documents that the largest southern European deltas formed almost synchronously during two short intervals of enhanced anthropic pressure on landscapes, respectively during the Roman Empire and the Little Ice Age. These growth phases, that occurred under contrasting climatic regimes, were both followed by generalized delta retreat, driven by tw...

The form and function of river deltas is intricately linked to the evolving structure of their channel networks, which controls how effectively deltas are nourished with sediments and nutrients. Understanding the coevolution of deltaic channels and their flux organization is crucial for guiding maintenance strategies of these highly stressed systems from a range of anthropogenic activities. To ...

The thermodynamic parameters DeltaH, DeltaS, T(m), and DeltaG of a total of 36 RNA strands, 22 tetralooped 22mers, and 14 heptalooped 25mers (same stem sequence) were analyzed with respect to enthalpy-entropy compensation (EEC). The EEC plots [DeltaH, DeltaS] were compared with collected literature data from protein and nucleic acid unfolding studies (3224 and 241 datapoints, respectively) whic...

This study documents the effects of changing lake level (limnostasy), tectonics, sediment yield, and basin physiography on the facies architecture, sequence stratigraphy, and reservoir quality of three fine-grained deltas deposited along the eastern margin of late Pleistocene Lake Bonneville. Analysis of facies architecture indicates that the Weber and Spanish Fork deltas were strongly wavemodi...

Failure A user-introduced failure without a specific interpretation in the model. Application Condition A condition in propositional logic (alternately represented as a set of sets offeatures) indicating to which feature configurations a delta is applicable. Application Function A function mapping deltas to their application condition. Class Refinement Like class inheritance, except that th...

Due to increasing water use, diversion and salinization, along with subsidence sea-level rise, deltas in arid regions are shrinking worldwide. Some of the most ecologically important include Colorado, Indus, Nile, Tigris-Euphrates. The primary stressors vary globally, but these threatened by increased storage diversion, eutrophication, wetland loss. In order make sustainable over time, some flo...

The dynamic nature of the data on the Web gives rise to a multitude of problems related to the description and analysis of the evolution of such data. Traditional approaches for identifying and analyzing changes are descriptive, focusing on the provision of a “delta” that describes the changes and often overwhelming the user with loads of information. Here, we take an alternative approach which...

Tidal deltas are characterized by a dendritic network of distributaries that transport water and sediments to the ocean. Here, I show that the distributaries self-organize to uniformly redistribute the tidal prism across the entire delta system. The 2 opposite mechanisms of channel formation by avulsion and channel abandonment drive the entire delta toward a critical state at which every channe...

We calculate the masses of the nucleons and deltas in twisted mass heavy baryon chiral perturbation theory. We work to quadratic order in a power counting scheme in which we treat the lattice spacing, a, and the quark masses, mq, to be of the same order. We give expressions for the mass and the mass splitting of the nucleons and deltas both in and away from the isospin limit. We give an argumen...